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CVE-2021-34994

30
FAUCET Score

CVE-2021-34994 is a critical remote code execution vulnerability affecting Commvault CommCell 11.22.22. It allows authenticated attackers to bypass the authentication mechanism and execute arbitrary Java code with NETWORK SERVICE privileges due to improper validation of user-supplied JavaScript. With a CVSS score of 8.8 (HIGH), this vulnerability presents a significant risk, enabling full compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential impact remains severe.

Impacted Technologies

VendorProductVersion(s)CPE
11.22.22CPE matchmatch criteria
cpe:2.3:a:commvault:commcell:11.22.22:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.79%
Probability of exploitation in next 30 days
EPSS Percentile
92.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0579 is in the 92nd percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

zerodayinitiative.com / advisories/ZDI-21-1329
Third Party AdvisoryVDB Entry